Bob the builder is making 480 kg of concrete mix concrete is made by mixing cement, sand and gravel in the ratio 1 : 3 : 4

how much sand does he need?

Points a and b are to be mapped onto a number line according to two equations the solution to the equation 2/3 a equals -24 is the coordinate of point a. solution to the equation 20 equals negative b / 0.2 is the coordinate of point b. (a)solve the first equation to find the coordinate of point a show your work (b)be solved the second equation to find the coordinate of point b show your work (c)determine the distance between the points a and b explained